Amino acid ion liquid for acidic gas absorption

An ionic liquid and acid gas technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of urban residents' health hazards and air pollution.

Inactive Publication Date: 2005-12-21
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These gases are either the source of the greenhouse effect, or directl

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Dissolve 1 mole of [emim][gly] in a small amount of absolute ethanol, mix with 4 moles of porous silica gel, and evaporate the solvent at 70°C. Drying was continued for 48 hours at 80°C under vacuum. Absorption of carbon dioxide gas is carried out in a carbon dioxide atmosphere at normal pressure and temperature, and 0.5 moles of carbon dioxide gas can be absorbed in half an hour.

Embodiment 2

[0017] 1 mole [P(C 4 h 9 ) 4 ][gly] was dissolved in a small amount of absolute ethanol, mixed with 4 moles of porous silica gel, and evaporated at 70°C to remove the solvent. Drying was continued for 48 hours at 80°C under vacuum. Absorption of carbon dioxide gas is carried out in a carbon dioxide atmosphere at normal pressure and temperature, and 0.5 moles of carbon dioxide gas can be absorbed in half an hour.

Embodiment 3

[0019] 1 mole [P(C 4 h 9 ) 4 ][Ala] was dissolved in a small amount of absolute ethanol, mixed with 4 moles of porous silica gel, and evaporated at 70°C to remove the solvent. Drying was continued for 48 hours at 80°C under vacuum. Absorption of carbon dioxide gas is carried out in a carbon dioxide atmosphere at normal pressure and temperature, and 0.5 moles of carbon dioxide gas can be absorbed in half an hour.

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PUM

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Abstract

The present invention relates to amino acid ion liquid for absorbing acidic gas. The anion of ion liquid is amino acid, amino acid ramification, similar to amino acid ion, imidazole cation, phosphoric cation, amine cation, ammoniumate cation and etc. After dipping craft, all ions can adhere to poriferous solid to absorb acidic gas such as carbon dioxide, sulfur dioxide emitted by flue and motor vehicles.

Description

[0001] Technical Field: The present invention relates to the use of amino acid ionic liquids for acid gas absorption. Background technique: [0002] The absorption of acid gases is a common problem in the chemical industry. For example, the extracted natural gas generally contains a certain proportion of carbon dioxide gas. If the carbon dioxide gas is not removed in advance, it will obviously reduce the combustion efficiency and increase the cost of pipeline transmission. Urban fuel machinery vehicles also emit a large amount of acid gases every day, such as carbon dioxide, sulfur dioxide, hydrogen sulfide, etc. These gases are either the source of the greenhouse effect, or directly pollute the atmosphere, causing harm to the health of urban residents. [0003] Ionic liquids, composed of anions and cations, are emerging solvents and reaction media. Due to its unique physical and chemical properties such as non-volatility and designable structure, ionic liquids have broad ap...

Claims

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Application Information

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IPC IPC(8): B01D53/14
Inventor 张建敏张锁江
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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